Culture is rooted in its time and space background.

文化是时间和空间的产物。

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In this paper, by analyzing the radiation characteristics of space target and space background, the modulation of them are built.

本文对空间目标和空间背景的辐照特性进行分析，建立物理计算模型。

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With the rapid development of space technology, space background of the division of non-cooperative target has become the new focus of concern.

随着航天科技的迅猛发展，空间背景下非合作目标的分割问题已经成为人们关注的新焦点。

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We know this because there are regular screenshots of the Seattle skyline complete with the Space Needle in the background.

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Google can help you find a restaurant, show you what your city looks like from space and give you a quick background check on your next date.

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This new photogenic moment, released Thursday, comes courtesy of the European Space Agency's Planck space telescope, which detects cosmic microwave background radiation -- the light left over from the Big Bang.

CNN: Better 'baby picture' of universe emerges